Process for removal of hydrogen sulfide and carbon dioxide from gas streams

Patent · Tue Jan 29 04:00:00 EST 1985

OSTI ID:5874693

Urban, P; Johnson, R W

A gas treating process is disclosed. Hydrogen sulfide and carbon dioxide are removed from a hydrocarbon vapor stream by absorption into an aqueous carbonate solution. Hydrogen sulfide picked up by the circulating carbonate solution is oxidized to produce liquid sulfur, which is withdrawn. The carbonate solution is then stripped to release carbon dioxide and produce the lean carbonate solution used for absorption. By-product thiosulfate formed in the oxidation step is eliminated by reaction with hydrogen sulfide. Metal phthalocyanines are used as the catalyst for the elimination of thiosulfate and for the oxidation of hydrogen sulfide.

• Assignee: UOP Inc.
• Patent Number(s): US 4496371
• OSTI ID: 5874693
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
04 OIL SHALES AND TAR SANDS
040404 -- Oil Shales & Tar Sands-- Purification
ADSORPTION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
DECARBONIZATION
DESULFURIZATION
DYES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
NATURAL GAS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHTHALOCYANINES
REMOVAL
SORPTION
SULFIDES
SULFUR COMPOUNDS
SYNTHETIC FUELS
SYNTHETIC PETROLEUM